The average value found for 20 observations was 75. It was noticed later that 97 was read as 79. So, what was the correct average value?

The average value found for 20 observations was 75. It was noticed lat

1.	The average value found for 20 observations was 75. It was noticed later that 97 was read as 79. So, what was the correct average value?
A.	75.7
B.	75.8
C.	75.9
D.	75.6
Answer» D. 75.6

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The average value found for 20 observations was 75. It was noticed later that 97 was read as 79. So, what was the correct average value?

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